Table 5 ISO/IEC 27001 growth for UK Year...

Table 5

ISO/IEC 27001 growth for UK

Year	Actual data	EGM (1,1,α,θ)	EGM (1,1)	DGM (1,1,α)	DGM (1,1)	Cumulative data	RGR	RGR mean	Dt	Dt mean
2010	1,157	1,157	1,157	1,157	1,157	1,157
2011	1,464	1,443	1,552	1,380	1,560	2,621	0.818	0.341	0.894	1.874
2012	1,701	1,708	1,811	1,701	1,820	4,322	0.500		1.386
2013	1,923	2,013	2,114	2,038	2,124	6,245	0.368		1.693
2014	2,253	2,368	2,467	2,414	2,479	8,498	0.308		1.871
2015	2,790	2,781	2,879	2,841	2,893	11,288	0.284		1.952
2016	3,367	3,263	3,361	3,330	3,377	14,655	0.261		2.036
2017	4,503	3,826	3,922	3,892	3,941	19,158	0.268		2.010
2018	4,723	4,483	4,578	4,539	4,599	23,881	0.220		2.206
2019	5,251	5,251	5,343	5,286	5,368	29,132	0.199		2.309
2020	5,897	6,148	6,236	6,148	6,265	35,029	0.184		2.384
2021		7,197	7,278	7,144	7,312	7,197
2022		8,423	8,494	8,295	8,533	15,620	0.775	0.345	0.948	1.855
2023		9,855	9,914	9,623	9,959	25,475	0.489		1.408
2024		11,528	11,571	11,159	11,623	37,003	0.373		1.679
2025		13,484	13,505	12,932	13,565	50,487	0.311		1.862
2026		15,769	15,762	14,981	15,832	66,256	0.272		1.996
2027		18,439	18,396	17,347	18,477	84,695	0.246		2.097
2028		21,559	21,471	20,081	21,564	106,254	0.227		2.177
2029		25,205	25,059	23,238	25,167	131,459	0.213		2.240
2030		29,465	29,247	26,884	29,372	160,924	0.202		2.291
a; β1		−0.15443	−0.15455	1.15102	1.16709
b; β2		1,123.561	1,256.080	1,204.810	1,366.185
α		0.96497		0.90072
θ		1
MAPE (%)		3.94%	5.87%	4.43%	6.16%

Year	Actual data	EGM (1,1,α,θ)	EGM (1,1)	DGM (1,1,α)	DGM (1,1)	Cumulative data	RGR	RGR mean	Dt	Dt mean
2010	1,157	1,157	1,157	1,157	1,157	1,157
2011	1,464	1,443	1,552	1,380	1,560	2,621	0.818	0.341	0.894	1.874
2012	1,701	1,708	1,811	1,701	1,820	4,322	0.500		1.386
2013	1,923	2,013	2,114	2,038	2,124	6,245	0.368		1.693
2014	2,253	2,368	2,467	2,414	2,479	8,498	0.308		1.871
2015	2,790	2,781	2,879	2,841	2,893	11,288	0.284		1.952
2016	3,367	3,263	3,361	3,330	3,377	14,655	0.261		2.036
2017	4,503	3,826	3,922	3,892	3,941	19,158	0.268		2.010
2018	4,723	4,483	4,578	4,539	4,599	23,881	0.220		2.206
2019	5,251	5,251	5,343	5,286	5,368	29,132	0.199		2.309
2020	5,897	6,148	6,236	6,148	6,265	35,029	0.184		2.384
2021		7,197	7,278	7,144	7,312	7,197
2022		8,423	8,494	8,295	8,533	15,620	0.775	0.345	0.948	1.855
2023		9,855	9,914	9,623	9,959	25,475	0.489		1.408
2024		11,528	11,571	11,159	11,623	37,003	0.373		1.679
2025		13,484	13,505	12,932	13,565	50,487	0.311		1.862
2026		15,769	15,762	14,981	15,832	66,256	0.272		1.996
2027		18,439	18,396	17,347	18,477	84,695	0.246		2.097
2028		21,559	21,471	20,081	21,564	106,254	0.227		2.177
2029		25,205	25,059	23,238	25,167	131,459	0.213		2.240
2030		29,465	29,247	26,884	29,372	160,924	0.202		2.291
a; β1		−0.15443	−0.15455	1.15102	1.16709
b; β2		1,123.561	1,256.080	1,204.810	1,366.185
α		0.96497		0.90072
θ		1
MAPE (%)		3.94%	5.87%	4.43%	6.16%

Source(s): Table by authors

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